[Exchange-3.3] Scheduler Component

[vaasu2002]

The Scheduler is a lightweight multithreaded task scheduler that manages worker threads and asynchronous task queues for the Stock Exchange system. It enables concurrent execution of tasks across configurable worker threads in a FIFO (First-In-First-Out) manner.

As a System Administrator
I want to create a pool of worker threads for concurrent task processing
So that I can distribute computational load across multiple threads efficiently

As a System Administrator
I want to start and gracefully shut down the scheduler and all worker threads
So that resources are properly initialized and cleaned up without data loss